Rotary double-dasher churn.



D. B. PATE.

ROTARY DOUBLE DASHER GHURN.

APPLIOATION FILED AUG. 5, 1912.

2 SHEETS-SHEET 1.

kjVVE/VTOR M /5. 0 7 'M 76 Allormy COLUMBIA PLANOGRAPH cov, WASHINGTON. D. C

D. B. PATH.

ROTARY DOUBLE DASHER GHURN.

APPLICATION FILED AUG.5, 1912 1,086,61 2, Patented Feb. 10, 1914.

2 SHEETS-SHEET 2 j INVENTOR Ami/a. 5 '1 4a., Q

Al/owwy COLUMBIA PLANOGRAPH ca". WASHINGTON. D. c.

DAVID B. IPA'IE, O13 HORNBEGK, LOUISIANA.

ROTARY DOUBLE-DASHER GHURN.

Specification of Letters Patent.

Patented Feb. 1Q, 191%.

Application filed August 5, 1912. Serial No. 713,325.

To all whom it may concern:

Be it known that T, DAVID B. Pnrn, a citizen of the United States, residing at Hornbeck, in the parish of Vernon and State of Louisiana, have invented certain new and useful Improvements in Rotary Double- Dasher Churns, of which the following is a specification.

This invention relates to rotary double dasher churns.

The present invention is an improvement on the churn set forth in the patent to James Nall, No. 97141-66, September 27, 1910, and has for its objects the minimization of a very great friction encountered in the Nall churn on account of the various bearings and mountings of the rotary parts thereof which tend to make the churn diflicult to operate and to cause it to wear out; second, the pro vision of means whereby the inner and outer dashers may be readily separated for purposes of cleaning or repairs; and third, the provision of means whereby the dashers may be adjusted up and down so that they may be accommodated to the churn body or receptacle.

In carrying out my invention, I provide, first, ball bearings at certain points of the churn, thereby very materially reducing the friction and effecting a great saving in the wear and tear of the machine as well as rendering its operation very much easier; second, means whereby the inner dasher may be removed without disturbing the other parts of the churn; third, means whereby the respective dashers may be adjusted up or down; fourth, means whereby either dasher may be readily disconnected so that it will remain idle while the other dasher is being operated.

In the accompanying drawings: Figure 1 is a side elevation; and Fig. 2, a view at right angles to Fig. 1.

The churn has a receptacle or body 1 preferably of glass so that the churning operation may be observed and, preferably, squar or octagonal so as to break up the swirl in case only one dasher is used. I do not, however, limit myself to the material or to the exact form of the churn body. This body has a contracted upper end provided with a ring or lip 2 for the attachment of the cover 3 which may be suitably held in position as, for instance, in the manner proposed in the Nall Patent No. 971et66, but modified arrangements may be employed for this purpose. The rotary dasher and the operating means are all carried by the cover 3 so that they may be bodily removed with it for purposes of cleaning or access to the interior of the receptacle 1.

As in the Nail Patent No. 971466, there is provided an outer dasher .lpreferably of sheet metal having blades or paddles 5 whose faces are inclined. Unlike the dasher of the Nall patent, the lower part or cross piece is provided with a cut-outor open part 7 permitting the inner dasher S to be removed from the outer dasher when desired. The inner dasher 8 has blades or paddles which are inclined and adapted to interact with the blades 5 of the outer dasher. The outer dasher has a frame 9 secured to a tubular shaft 10 which extends upward through a hole or a bushing in the cover and carries a pinion 11 which is secured thereto by a set screw 12 so that it may be released from engagement with the tubular shaft when desired, as for instance, when the outer dasher is to remain stationary. I also provide on the frame below the pinion 11 a ball bearing 13 which takes the entire weight of both dasher-s as will presently appear, thus very materially reducing the friction caused at this point in the Nall construction and which tends to unevenly wear down the bushing employed in that patented construction, as well as rendering the operation of the churn more diflicult. By the provision of the ball bearing, the operation is rendered very easy and the life of the parts lengthened. The balls of the bearing 18 are of good size so that there will be a free running suspension of the parts at this point. I may also provide a ball bearing at it where the shaft 15 of the inner dasher enters the tubular shaft of the outer dasher.

Where the tubular shaft 10 enters the frame 16 which supports the driving mechanism of the dashers, I provide a ball bearing 1'7; and another ball bearing 18 may be provided where the shaft 15 emerges upwardly from the shaft 10. Secured by a set screw 19 to shaft 15 is a pinion 20 by which the inner dasher is driven, said pinion resting on the upper end of the tubular shaft 10 or, preferably, provided with a ball bearing 18 at this point to take up the weight of the inner dasher. It will be seen, therefore, that the weight of both dashers and their shafts are borne by the lower ball bearing; further, that by loosening the set screw of either pinion, the dasher controlled by the pinion in question will remain stationary while the other dasher rotates. A

collar 22 is provided on the upper end of the shaft 15 to support the inner dasher when its pinion is released from shaft 15. A ball bearing 21 may be provided under this collar, if desired. The cranked shaft 23 carries a gear 24 which meshes with the aforesaid pinions, whereby said pinions and the respective dashers are driven in opposite directions.

The inner dasher is connected to its shaft 15 by a screw-threaded joint or coupling 25, whereby the inner dasher may be removed without sliding it through the open part 7 I may, if desired, employ both the open part 7 and the screw-threaded coupling 25, or, the opening 7 alone, or, the screw-threaded coupling 25 alone.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a churn, the combination with a receptacle and a cover, of rotary dashers, a tubular shaft from which one of the dashers is suspended, another shaft for operating the remaining dasher, the shaft last named being rotatable within the tubular shaft, a pinion on the tubular shaft, a ball bearing carried by the cover on which the pinion rests, a ball bearing interposed between the two dashers whereby the inner dasher is supported from the outer dasher the firstnamed ball-bearing thereby sustaining the two dashers, a frame carried by the cover, ball bearings carried by said frame in which the tubular shaft and the remaining shaft are mounted, a crank operated driving gear meshing with the aforesaid pinions, ball bearings for the shaft of said crank operated driving gear, ball bearings for the shaft of the inner dasher where it enters and emerges from the tubular shaft.

2. In a churn, the combination of inclependent interacting rotary paddled dashers solely suspended by separate suspending operating shafts and themselves free of engagement or intersupport, the outer dasher being provided with a central open bottom part and the inner dasher with a detachable connection to its shaft, whereby the inner dasher may be removed with its shaft through the central bottom part of the outer dasher or disconnected from its shaft and removed from the outer dasher without disconnecting or disturbing the latter.

In testimony whereof, I hereunto affiX my signature in presence of two witnesses.

DAVID B. FATE.

WVitnesses: V

SALLIE IIARRELL,

L. G. GABRA.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

